Thermostat



FIG. 1 is a front perspective view from above of the claimed design for a thermostat;

FIG. 2 is a front side view of the claimed design of FIG. 1;

FIG. 3 is a rear side view of the claimed design of FIG. 1;

FIG. 4 is a right side view of the claimed design of FIG. 1;

FIG. 5 is a left side view of the claimed design of FIG. 1;

FIG. 6 is a top view of the claimed design of FIG. 1; and,

FIG. 7 is a bottom view of the claimed design of FIG. 1.

The broken lines in the drawings form no part of the claimed design. Oblique lines represent transparent or semi-transparent portions of the claimed design. 

CLAIM We claim the ornamental design for a thermostat, as shown and described. 